Thread-parting mechanism for looms.



W. MoCASLIN. THREAD PARTING MECHANISM FOR LOOMS. AHLIOATION FILED JAN. 2, 1912.

1,035,21 3. Patented Aug. 13, 11912.

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WIIiLIAli'E ltIcGASLIN, OF HOPEDALE, MASSACHUSETTS, ASSIGNOB TO DRAPER COM PANY, OF HQPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

THREAD-PARTING MECHANISM FOR tooMsI Specification of Letters Patent.

Application filedJanuary 2, 1912. -Serial No. 668,875.

To all whom it may concern:

Be it known that I, WILLIAM McCAsLIN, a citizen of the United States, and resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Thread-Parting Mechanism for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to mechanism for partin the old filling end near the shuttle when filling is replenished in an automatic filling-replenishing loom of the feeler type, one form of mechanism of this character being shown in United States patent to Draper, No. 683,423, dated September 24, 1901. Therein the fixed and movable parting blades mounted on the shuttle-feeler, the blades bei opened by a suitable device when said; eeler is moved rearward to operative position, and said blades are closed by or throughthe agency of the lay as it moves forward on the My present invention has for its object the production of simple and efiectit'e means to assist in guiding or directing the filling end into position to be parted when the shuttlefeeler moves the parting device into operative position.

Figure 1 is a top plan view of a portion of the replenishing side of an automatic loom, showing the shuttle-feeler and threadparting device, with my present invention applied thereto; Fig. 2 is an inner-side elevation of the shuttle-feeler and parting device, the latter being in its normal, closed position, with my improved guiding means in retracted position; Fig. 3 is a similar view, enlarged, but showing the guiding means in its operative position and the parting device 'open, the parts being shown as they would be positioned just before the for- \vardlv moving lay acts to close the parting device upon the filling end; Fig. 4 is a side elevation of the rear end of the shuttle- :teeler, partly broken out, with the guiding means thereon, the parting blades being omitted; Fig. 5 is a left hand end View of the structure shown in Fig. 1.

in Fig. 1 the lay A shuttle-box B thereon having a back wall 5, the controlling rockshaft (Z' of the filling-replenishing mechanism (the replenishing mechanism being .as the latter beats up, the old filling end t, Fig. 1, shouldenter the parting device comprises.

- omitted) the upturned arm Y bent 'rearwardly .at its upper end at ,Y' to constitute a shuttle-feeler, and notched at 3, the stud g? on arm Y, having a finger n"- and the parting device mounted on the feeler and comprising the fixed and movable blades 0, 0* are and may be all substantially as in the Draper patent except in such particulars as are hereinafter referred to.

When the shuttlefeeler is moved to operative position so as to extend across the lay as in Figs. 1 and 3,

notch 3 between the blades 6, a to be arted cleanly and with certainty when said lades are closed. Should the filling end be slack it would tend to hang down below the notch so that the blades could not act upon it. To

overcome this I mount upon the fe'eler a longitudinally slidable guide havin a flared or V-notched rear end to receive t end and guide it into the-notch 3 when said guide is operatively positioned. This is herein shown as a thin, flat, metal late 10, having a longitudinal slot 11 therein, Fig. 4:, extending from its rear end frontward, the rear end of the plate being widened somewhat, and provided with a ii-shaped notch, the divergent edges thereof constituting flaring jaws 12, 13. The opposed edges of the jaws meet the edges of the slot 11, as clearly shown in Fig.4.

To support the 'guide plate the feeler Y is longitudinally slotted at its upper and lower edges, at 14, 15, Fig. 5, leaving an elongated intermediate portion 16 which forms, a bearing for the plate. By reference to Fig. 4 it will be clear that the guide plate 10 can slide longitudinally upon this hearing 16 and within the slot-s14 and 15', the front end of said bearing or abutment-to limit rearward movement of said plate. A small rod 17 fixed to the plate; extends frontward loosely through a guide bearing 18 on the arm Y, and a projecting spring 19 is-coiled about the rod between said bearing and the plate, normally acting to project the acting as a stope filling guide I the spring guide plate rearward into the position shown in Figs. 1

1, 3 and 4. laterally projecting pin'or stud 20 on said plate constitutes a stop-for a purpose to be described.

When the guide plate is projected into operative position the jaws 12, 13' extend and i, the jaw entero in the raceway of the 'POSltlOil shown in Fig. 2 to open position,

Fig", 3. ln my present invention I provide the front end of said blade c with a detent, shown as lug 22 having a front :tace 21, the detent being so positioned that When the blade 6* is closed and the guide plate 10 retracted, as in Fig. 2, the face 21 Will be upright and behind the stop 20, in engagement herewith. Consequently the guide plate is held retracted against the action of its projecting spring" 19. Thus under normal conditions the jaws 12, 13 are retracted toward one close to the rear end of the shuttle- :teeler, and positively held. in such position by engagement of the detent with the stop 20, so that there is practically no rearward elongation oil the shuttledeeler at such time.

When filling replenishment is called for the shuttle-feeler is moved rearward bodily, and during such movement the cam e en ,gag s the setting pin thereby opening the ole e 0". but such opening movement of the blade disengaees the detent from the stop 2i), and the guide plate is quickly projected rearward toward the advancing lav, bringing the flaring aws 12, 13 With a sudden jump into operative position across the lay to insure the guidance of the fillings" end into l eeler notch 3 and between the blades 6', c. it is foun d in practice that this quick, rear-Ward jump of the guide jaws will always effect the proper engagement thereof wi h the filling end, for as the lovver guide jaw is thus thrust rapidly beneath the filling end the latter is lifted quickly and surely into position to enter the feeler notch, ob viating the possibility of the filling end ins}; pushed toward the back of the raceway, and awav from the notch, bv the guide jaw. i rS the lay continues to advance back Wall of the shuttle-bonB Will engage the flared jaws and will move the guide plate 10 frontward on the teeler to bring the stop into position in front of the detent, but le jump of the guide jav s has by this time sured the entrance of the filling end into 1.0 notch f and finally the lay hits the heel and closes the blade 0, therebv parting the filling" end. This movement of the blade moves the detent 22 upward so that its face 21 vvill be in position to engage the .10 20 as the lav swin s bath and the.

be seen t relative p so remain when i'ecler returns to its normal position ready or the next operation,

To prevent the resetting of the guideplate too soon on the beat-up, that is, in order that the uinp of the guide jaws shall have time enough to engage and lift the lling end, I provide the box Wall F) with a recess (5* for the reception of: the tips of the jaws 12, i3.

b the parts l his recessing oi the box-Wall also permits the jaws of the guide to extend completely series the raoeway of the lay, so that the picking up of a slack filling end and its guidance to the feeler notch 3 is insured, even should the filling end be located toward the back of the raceway, as sometimes hap pens, It the shuttle should be improperly boxed the jaws 12, 13, either or both, would engage it and thereby the guide plate 10 would be moved trontward along the ttceler as the lat tei'continuesits operative orreni'ward strolte to feel the shuttle, so that there is no interfei'ence with the proper function the l eeler, The spring 19 gives the rearward jump to the guide jaws at a speed in excess of that of the sln'lttleieelei' it moves roan Ward to feeling position, and this accelet=- l o the jaws is the primary factor ated soeeu in providing for the quick and certain li ing of the filling end and its guidance into the notch before the filling,- end has opportunity to move rearward with the engaging jaw,

llaving fully described my inv ion, what I claim as new and desire secure Letters Patent is:

1, ln a loom, ashutt e- Ward at accelerated speed with thereof extended beyond the notch d the feeder, stop on the plate, a deteL carried by the movable parting blade operate with said stop and retain *2 retracted when the said blade ii sition, movement of the blade to s tie causing the detent to permit the plate to he e ,ng with a quick j tne sliu e1 is moved to operative position, the l rearward jumpof said plate ca the lower av; to l? 1111 the ailing; end S: nosition it for entrance into in e loom, a shin notch in itsend, a i

rwith its rear end to .part the filling end when in the notch, a guide having a V-shaped rear end and longitudinally slidable on the feeler, a spring 4. The combination with a lay having a shuttle-box thereon, a shuttle-feeler, and a device movable bodily therewith into posito project said guide at an. accelerated speed tion to part the old filling end, said device extended beyond the notched end vof the feeler, to lift with a sudden, guick movement the filling end and thereby insure proper guidance of the same into the notch, members guide and blade, respectively, to cooperate when the blade is in closed position, and retain the guide'retracted, movement of said blade to open position causing release of the guide as the shuttlefeeler moves rearward,

' and a moving member of the loom to engage the operatively positioned guide it on the beat up after the been lifted to enter the feeler notch.

3. In a loom, atsl1uttle-feeler, fixed and and retract movable parting blades thereon; to part the filling end, and normally retra projected means on the feeler to extend rearward when projected with a quick jump and effect sudden' uplift and. guidance of the filling-end into position to be parted by the blades, combined with means controlled by the movable blade to hold said guide means retracted when the parting blades are closed and to release the guide means for accelerated rearward'movement relatively to the feeler when said blades are opened to receive the filling end.

ted, spring- I epics of this patent may be obtained for five cents each, by'

carried by said filling end has sition on the feeler including a movable parting blade, of a guide slidably mounted upon and movable longitudinally of the 'feeler andhaving, L

retain the guide retracted, movement of the blade to op n position on the. rearward swing of th: feel causing the detent to release the stop; where- 'by the gulde is operatively positioned at an accelerated speed to effect a sudden uplift of and to direct the filling end into position to be parted, the back of the shuttle-box thereafter engaging the rear end of and moving said guide forward to retracted poas the lay beats,up.

In testimonywhereof, I havesigned my name to this specification, iii the presence of two subscribing witnesses.

WILLIAM MCCASLIN. Witnesses WM. SALMOND, E; D, Osooon.

addressing the Commissioner of Patents,

Washington, D. G.

er to operative position 

